Bug 209324 - [labeled networking] NetLabel has a race problem in the cache
Summary: [labeled networking] NetLabel has a race problem in the cache
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
: ---
Assignee: Eric Paris
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks: 208884
TreeView+ depends on / blocked
 
Reported: 2006-10-04 16:32 UTC by Paul Moore
Modified: 2007-11-30 22:07 UTC (History)
2 users (show)

Fixed In Version: 5.0.0
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2006-11-17 19:19:51 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Paul Moore 2006-10-04 16:32:43 UTC
Description of problem:
The NetLabel subsystem has a race problem in it's cache where an entry could be
freed while still in use.  A patch which fixes the problem can be found here:

 * http://marc.theaimsgroup.com/?l=linux-netdev&m=115997706318149&w=2

Version-Release number of selected component (if applicable):
All kernels which include NetLabel.

How reproducible:
This can be difficult to reproduce as it requires hitting a small window.

Steps to Reproduce:
1. Configure NetLabel
2. Generate traffic over a NetLabel connection
3. Repeatedly flush the NetLabel cache (delete CIPSO DOIs, reload the SELinux
policy)
  
Actual results:
The kernel will oops.

Expected results:
No oops.

Additional info:
This directly effects the LSPP efforts of RH, HP, and IBM.

Comment 1 RHEL Program Management 2006-10-05 19:17:24 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 3 Jay Turner 2006-10-10 15:00:30 UTC
QE ack for RHEL5B2 according to 14b.

Comment 5 Don Zickus 2006-10-11 01:37:38 UTC
in kernel-2.6.18-1.2725.el5


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